A signal driver may include a variable termination resistor and a signal transmission line. The variable termination resistor may include one or more variable termination resistor units. Each of the one or more variable termination resistor units may include a switch connected to a first end node of the variable termination resistor; a T-coil connected to the switch; a first resistor connected to the first end node of the variable termination resistor and to the T-coil; and a second resistor connected to a second end node of the variable termination resistor and to the T-coil. The signal transmission line may be connected to the second end node of the variable termination resistor.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The signal driver according to claim 1, wherein the first end node of the variable termination resistor is configured to be connected to a ground or a supply voltage.
4. The signal driver according to claim 3, wherein the first resistor is disposed between a first terminal of the T-coil and the first end node of the variable termination resistor, and the second resistor is disposed between a second terminal of the T-coil and the second end node of the variable termination resistor.
6. The signal driver according to claim 1, wherein for each of the one or more variable termination resistor units: when the switch is turned on, each of the one or more variable termination resistor units has a first unit resistance, and when the switch is turned off, each of the one or more variable termination resistor units has a second unit resistance.
11. The signal driver according to claim 9, wherein the switch comprises a metal oxide semiconductor field effect transistor (MOSFET).
13. The variable termination resistor according to claim 12, wherein the first end node of the variable termination resistor is configured to be connected to a ground or a supply voltage, and the second end node of the variable termination resistor is connected to a signal transmission line.
14. The variable termination resistor according to claim 12, wherein the first resistor is disposed between the first terminal and the first end node of the variable termination resistor, and the second resistor is disposed between the second terminal and the second end node of the variable termination resistor.
15. The variable termination resistor according to claim 12, wherein for each of the one or more variable termination resistor units: when the switch is turned on, each of the one or more variable termination resistor units has a first unit resistance, and when the switch is turned off, each of the one or more variable termination resistor units has a second unit resistance.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
October 10, 2022
July 2, 2024
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